Pasteurization is a process of food preservation in which packaged and non-packaged foods (such as milk and fruit juices) are treated with mild heat, to eliminate pathogens and extend shelf life. The process is intended to destroy or deactivate microorganisms and enzymes that contribute to food spoilage or risk of disease, including vegetative bacteria.
H.T.S.T. pasteurization means High Temperature for a Short Time.
The heat exchange process takes place on the continuous flow of product, which is heated to the required heating temperature, for a standstill time, then to the required outlet temperature.
The HTST pasteurizer is equipped with several controls to ensure the effectiveness of the treatment, record the preliminary process of sanitization, preparation, start and end of product treatment and washing of the machinery.
The operator can set the pasteurizer in 5 stages using panel buttons, these are: sanitization, preparation, production, production end and washing.
The washing configuration provides a flow increase, temperatures change and timed switching of the pneumatic valves to ensure an effective cleaning. The washing cycle can be managed by a remote C.I.P. plant, allowing it to be implemented on existing lines without making major changes to the production plant.
| Standard components |
| Constant level tank |
| Sanitary centrifugal flow pump mod. FCA managed by a frequency inverter drive |
| Plate heat exchanger mod. PHEX FDB with hot/cold heat recovery |
| Automatic unit for temperatures regulation |
| Unit for flow, back-pressure and differential pressure regulation |
| Sanitary centrifugal booster/timing pump mod. FCA (when required) |
| Heated product holding tube |
| Automatic unit for hot water with centrifugal pump and proportional valve |
| Unit for cooling with water |
| Unit for potable water loading |
| Command and control board with digital recorder |
| Pneumatics board |
| Stainless steel skid with height-adjustable feet |
| Model | Max Temperature [°C] | |
| All models | +95 (higher on request) |
| Model | Flow rate [L/h] | Installed power [kW] |
| HTST300/900 | 300 – 900 | |
| HTST1000/2500 | 1.000 – 2.500 | |
| HTST3000/4000 | 3.000 – 4.000 | |
| HTST4500/5500 | 4.500 – 5.500 | |
| HTST6000/10000 | 6.000 – 10.000 | |
| HTST11000/18500 | 11.000 – 18.500 | |
| HTST19000/27500 | 19.000 – 27.500 | |
| HTST28000/39000 | 28.000 – 39.000 |
Model ######### | Semi-Automatic light ############ | Semi-Automatic ########### | Automatic ########### | Full-Automatic ########### |
| Control for the remote loading pump | Power line, optional | Dry signals, Power line, optional | Dry signals, Power line, optional Power line with inverter, optional | Dry signals, Power line, optional Power line with inverter, optional |
| Level on balance tank | Float-ball inlet with flow adjusting butterfly valve | Float-ball inlet with flow adjusting butterfly valve. Min/max level probe Min/max level probe and pneumatic valve, optional Continuous level probe and pneumatic valve, optional | Continuous level probe and pneumatic valve | Continuous level probe and pneumatic valve |
| Control of flow pump | With inverter and visual flow-meter Pump speed change on cycle switch | With inverter and visual flow-meter Pump speed change on cycle switch With inverter and digital flow-meter for automatic flow, optional | With inverter and digital flow meter for automatic flow | With inverter and digital flow meter for automatic flow |
| Differential pressure and back-pressure control | With pressure probes and flow adjusting butterfly valve | With pressure probles and pressure adjusting butterfly valve With pressure probes and proportional valve, optional | With pressure probes and proportional valve | With pressure probes and proportional valve |
| Heating temperature control | Automatic, with indirect exchange water/product | Automatic, with indirect exchange water/product | Automatic, with indirect exchange water/product | Automatic, with indirect exchange water/product |
Outlet temperature control | Manual adjusting on thermometer | Automatic with proportional valve on temperature probe | Automatic with proportional valve on temperature probe | Automatic with proportional valve on temperature probe |
| Potable water control | Manual loading | Manual loading Automatic loading on cycle switch, optional | Automatic loading on cycle switch | Automatic loading on cycle switch |
| Command and control board, automation | Digital recorder PID controllers Phase switch: sanitization, production, washing, | Digital recorder PID controllers PLC Internet remote assistance, optional Basic data exchange, and basic remote management, optional Phase switch: sanitization, preparation (optional), production, end_production (optional), washing | Digital recorder PID controllers PLC and HMI touch panel Internet remote assistance Db data exchange and remote management, optional Phase switch: sanitization, preparation, production, end_production, washing Pneumatic valves with control unit, optional | Digital recorder PID software PLC and HMI touch panel Internet remote assistance Db data exchange, remote management systems and integration with factory supervisor for Industry 4.0 Phase switch: sanitization, preparation, production, end_production, washing Pneumatic valves with control unit |
| Optional components |
| Heated product holding pipe for two or more holding times |
| Unit for heat recovery adjusting to obtain a constant temperature to centrifugal separator or to degasser or to homogenizer |
| Unit for product pre-cooling with tower water/well water |
| Unit for product cooling or post-heating on outlet (cold outlet / hot outlet) |
Unit for product cooling, post-heating, super hot post-heating on outlet (cold outlet / hot outlet / super hot post-heating, up to pasteurization temperature) |
| Heating by indirect exchanger water/product, with built-in electrical hot water boiler (Max temperature +85°C) |
| Heating by indirect exchange steam/water/product, with self-operated pressure reducer and brazed plate heat exchanger |
| Heating by indirect exchange steam/water/product, with built-in electrical steam generator |
| Shell and multi-tubes heat exchanger mod THEX FDB for high pasteurization temperature |
| Connection line for centrifugal separator |
| Connection line for degasser |
| Connection line for high pressure homogenizer |
| Automatic C.I.P. washing unit, built-in |
| Perimeter structure with housed the connections |
| Optional equipment |
| Self-cleaning centrifugal separator |
| Vacuum degasser DEGA FDB |
| High pressure homogenizer |
| Electrical hot water boiler, stand-alone |
| Electrical steam generator, stand-alone |
| Hot water heating unit by steam, stand-alone |
| Automatic Cleaning In Place C.I.P. unit CIPP FDB, stand-alone |